Neuroscience Study Notes

  • Neuroscience Overview

    • Study of the brain; complex organ of approx. 1.5 kg

    • Integrates multiple disciplines: biology, psychology, physiology

    • New discipline named Neuroscience formed to understand brain functions

  • Nervous System Structure

    • Composed of brain, spinal cord, and peripheral nerves

    • Neurons (nerve cells) and glial cells (supporting cells)

    • Three types of neurons:

    • Sensory neurons (input from senses)

    • Motor neurons (output to muscles)

    • Interneurons (connect sensory and motor neurons)

  • Neural Communication

    • Neurons transmit signals via action potentials; electrical impulses

    • Synaptic transmission occurs at junctions, utilizing neurotransmitters

    • Glutamate (excitatory) and GABA (inhibitory) as key neurotransmitters

  • Brain Anatomy

    • Divided into hindbrain (basic functions), midbrain (sensory processing), and forebrain (higher functions)

    • Cerebral cortex: highly developed, responsible for complex processing (e.g., thought, memory)

    • Two hemispheres connect via corpus callosum

  • Plasticity and Development

    • Neuronal plasticity underlies learning and memory

    • Early brain development involves gene-driven processes and environmental influences

  • Important Functions and Disorders

    • Memory systems divided into working memory and long-term memory

    • Disorders: Dyslexia, Alzheimer's, epilepsy, and effects of stress/hormones

  • Brain Imaging

    • Techniques: MRI, fMRI, PET for visualizing structure and function

    • Help understand brain activity related to tasks

  • Neuroethics

    • Intersection of neuroscience, philosophy, and ethics concerning implications of brain research

    • Challenges include informed consent, animal research issues, and potential misuse of brain-imaging technologies

  • Careers in Neuroscience

    • Opportunities in academic research, medicine, pharmaceuticals, neurotechnology, education, and science communication

    • Diverse paths for students interested in biology, psychology, and technology.